In the anime

A bunch of bikers appeared in The Bridge Bike Gang, as the title gang. Notable members include Chopper and Tyra. The gang stopped Ash and his friends from crossing the bridge, but after a battle, Ash told them he was trying to save a sick Pokémon, so the bike gang let them go. Jessie and James were also members of this biker gang before joining Team Rocket.

In the manga

In PBW1, there is a biker called the Bōsōzoku King (Jp: 暴走族のキングBōsōzoku King) where he laughs at the thought of the trio becoming battle masters and starts to insult them, annoying Monta and Cheren. He thinks they are weak and challenges Monta and Cheren to a Double Battle against just his Braviary. Despite being very strong, he was defeated by Monta's Snivy and Cheren's Tepig's combination of Grass Pledge and Fire Pledge.

Pokémon

The Bōsōzoku King's Braviary was first seen in a battle against Monta's Snivy and Cheren's Tepig. It proved to be a very powerful opponent and easily managed to shrug off most of their attacks. Despite this, it was eventually defeated by a combination of Grass and Fire Pledge.

In the Pokémon Adventures manga

In The Boss Gets Off, a group of Bikers appeared at Three Island. There, they decided to take all of the Berries from the nearby Berry Forest, then they would destroy the town. On their way to the forest, they nearly ran over Lostelle. The boss of the gang then threatened the little girl. Overhearing this, the legendary Deoxys attacked the Bikers. They were all battered and bruised, but the leader got away and begged for help from a man, but he showed no mercy for them.

In the Black & White chapter, a Biker was one of the people who released their Pokémon after listening to Ghetsis's speech. When Black tried to protest this decision, he was told to mind his own business. Later, this same Biker was revealed to be the leader of the Black Empoleon.

During his training with Brycen, Black was tasked with facing the Black Empoleon on the Tubeline Bridge. Thanks to his earlier training, Black manages to easily defeat his opponents. Once defeated, Jeremy renames the gang to the Black Tirtouga. Jeremy later appears at the Pokémon League alongside several other Trainers to help battle Team Plasma.

Pokemon

Ducklett

This Ducklett was owned by the Black Empoleon's original leader for over ten years. Despite this, it was released after its Trainer was swayed by Ghetsis's words.

In the Pokémon Pocket Monsters manga

Bikers in Pokémon Pocket Monsters

While Red and his Pokémon were going to a department store to get a flying machine, a group of bikers show up and surround the trio. Their Weezing was only seen for a brief second as their two heads did not get along with each other. After Weezing's defeat, Primeape showed up much to the bikers's surprise and took care of Clefairy itself. When Clefairy was kicked into the department store, this made the bikers laugh. However, a banana distracted the Primeape which caused Clefairy to defeat it. After battling the bikers, Red and his Pokémon run in the department store only to find out that Blue beated them there. After Blue flew away on the flying machine, Clefairy got on the motorcycle and the bikers respected him.

Pokémon

Weezing

Weezing was called over to battle with Red's Clefairy. As its two heads did not get along with each other and fought, Weezing ended up defeated.

Primeape appeared after Weezing failed to battle Clefairy. It played some games with Clefairy and when Clefairy won one of them, he walked away laughing in overconfidence, only to get hit by Primeape's fists. The bikers started laughing when Clefairy was kicked into the department store. Pikachu found out Primeape's weakness as it was distracted by a banana. With Primeape distracted, Clefairy picked it up and tied it to a buffet.